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each pizza has 8 slices the teachers want enough pizzas so that each student can have 2 slices if there are 22 students in eeach of the 3 fourth grade classes how many pizzas must be ordered

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22 * 3 = 66 students

66 * 2 = 132 pieces

132/8 = 16 1/2

Since the teachers can't buy 1/2 a pizza, they'll need to buy 17 pizzas.

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